Painting-machine.



- rvrarnn maras 1 DAVID REYAM, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ENAMELED ART METAL COMPANY, OE PHILADELPHIA, PENN- SYLVANIA, A CORPORATION OE DELAWARE.

PAINTINGWWIAIIIINIE.

Specification of Letters Patent.

Patented Get. 17, 1905.

Application filed November 11, 1904. Serial No. 232,357.

To all whom may concern:

Be it known that I, DAVID REYAM, a citizen of the United States, residing in Philadelphia, Pennsylvania, haveinvented certain Improvements in Painting-Machines, of which the following is a specification.

One object of my invention is to provide a machine for applying paint to one side of pieces of sheet material, such as metallic plates, which shall be of simple and inexpensive construction, aswell as economical and efficient in operation. I further desire to provide a paintingmachine for material in sheet form, in which such material is made to pass between two rollers, of which one only applies paint, while the other is of such construction that it is never in contact with the iirst roller.

Another object of my invention is to provide the two rollers employed in applying paint to sheet material with mechanism so arranged that one of said rollers may be constantly driven while the other is provided with mechanism whereby it may be started to turn, so as to cause a sheet of material to be passed between it and the other roller and be painted on one side.

These objects I attain as hereinafter set forth, reference being had to the accompanying drawings, in which- Figure l is a front elevation of my improved painting-machine. Fig. 2 is a side elevation of the machine shown in Fig. l. Eig. 3 is a sectional elevation taken on the line 3 3, Fig. l; and Eig. I is a slightly-modified form of my invention.

In the above drawings, A is the base-plate of the machine, which, inthe present instance, is provided with supporting-legs t and upwardly-projecting standards d. In these latter are journaled two shafts a2 and a, on which are two rollers B and O, respectively, preferably,though not necessarily, formed of wood and provided with a covering ai of yield ing material, suoli as cloth, rubber, &c. In the preferred form of my machine the upper one of these rollers is of cylindrical form, while the lower may be described as a portion of a cylinder, such as would remain after part of its surface had been removed by the intersection of a plane parallel to its axis.

T Wo shafts a2 and a3 are so placed that the circularly-curved surfaces of the two .rolls are either in engagement with or very close to one another, though under normal conditions the lower roll Bis maintained in such a position that it is never actually in contact with the upper roll, inasmuch as its cut-way portion is adjacent to said upper roll. In order to maintain the lower roll in this position, as well as to insure its returning to the same after each operation, I provide a disk b, keyed or otherwise fastened to a portion of the shaft a2, projecting outside of the standard a. This disk is preferably of the same shape as a section of the lower roller and is provided with a pin b', projecting from one of its faces into engagement with the Vend of a pivotaIly-supported bar a, which is carried on a standard a, fastened to the base-plate A.

An operating-lever D is pivoted to the side standard a of the machine, so that its inner end engages a suitably-formed recess in the edge of a portion of the bar a above its point of pivotal support, the end of said lever being preferably rounded, as shown in Fig. 2, to facilitate its passage into and out of the recess in the bar. The opposite end of said lever is provided with a handle CZ, and its downward motion is limited by an adjustable stop al, which preferably consists of a setscrew projecting from a bracket fixed to the side standard of the machine.

A spring al normally holds the upper arm of the bar t5 in engagement with the inner end of the operating-lever D, and there is fastenedl to the base-plate A and projecting upwardly therefrom a spring-piece as, whose upper end projects adjacent to that face of the disk B from which the pin L projects. Said end of the spring-piece is curved, as shown in Fig. 2, so that it has a portion a" extending nearer the center of the disk B than does the pin while its extreme end is curved away from the center of the disk for a distance greater than the distance between the pin and the center. A spring t 1 tends to retain the lever D with its handle Z raised.

Fixed to the shaft a is an arm Il", having at its Lipper end a weight o", and so placed relatively to the cutaway portion of the disk I; that it tends to move the circularly-curved surface thereof into engagement with the circular disk c, fixed to the shaft a3 and lying in the same plane as said disk Under operating conditions paint is supplied to the surface of the upper roller or cylinder C by any of the means known to the art, and this apparatus has not been illustrated, inasmuch as it forms no part of the present invention. The upperroller, however, is constantly turned by means of a shaft E, driven from any desired source of power through a pinion e on said shaft and a gear c on the shaft a3. A sheet of material to be painted is then placed in position between the two rollers C and B, so that it rests upon the latter of these without being moved through the machine, since in practice the adjacent portions of the two rollers B and C when in the respective positions shown in Fig. d are about oneeighth of an inch apart. If now the handle Z of the lever D be pressed downward, the bar ai is turned on its pivot, and thereby removes its upper end from engagement with the pin n. The weight upon the arm 3 now causes revolution of the shaft a2, and consequently turns'the disk L and roller B, thereby bringing the circular portion of the surface of said diskV into engagement with the vconstantly-turning disk c. Owing to the frictional contact between said two disks, the disk Z1 is rotated, and with it the sha-ft ft2 and roller B. Such rotation presses the plate or sheet to be painted into contact with the paint-covered surface of the roller C, and since, as above noted, the cylindrical surfaces of the rollers Band C would engage one another vwere it not for the interposition of the plate F this latter is fed through the machine and deposited upon conveying-belts G of the well-known construction and arrangement.

In practice the axially-concentric portions of the surface of roll B and also of the disk have a peripheral length the same as the length of the plate or plates to be painted, and it will be seen, therefore, that as long as there are portions of the two rolls C and B tangent to one another just so long is the plate of material between them, there being', consequently, no possibility of paint becoming' deposited upon the lower roller.

It will be understood that after the painted plate is discharged from the two rolls the lower one still tends to revolve under its own momentum. Itis, however, gradually brought to a standstill by the engagement of the pin carried by the disk b, with the curved portion a" of the spring as and finally comes in contact and is held from moving by engagement with the end of the arm af, it being noted that this latter returns to and remains in the position shown in Fig. 2 as soon as the downward pressure on the handle Z of the lever D is released.

In practice I preferably cover the surfaces of the disks c and L with leather, cloth, rubber, or equivalent material in order that they may frictionally engage one another without likelihood of slipping.

If desired, I may make the lower roll, as shown in Fig. 4 at B', of a completely-cylindrical form, covering it, however, with a relatively thick padding of cloth, rubber, &c., for but a fraction of its surface. Under operating conditions there would be secured the same result as that obtained by the construction shown in Figs. l and 3, since the two rolls would engage one another for a length of time depending upon the length of the plate to be painted.

It will be seen that the spring a8 acts as a brake to gradually bring the lower roller B to rest, and, if desired, the lower end of the arm d5 may rest upon the base-plate A, so that the sudden shock due to the striking of the pin against the end of said arm will be taken by the base-plate and not by the standard a.

If desired, the weighted arm may be omitted without departingI from my invention, since the lower roll is top-heavy and naturally tends to rotate to its lower position, in which the two disks would be brought into contact.

I claim as my inventionl. A painting-machine having two rolls of which one is supplied with paint, means for supporting said rolls in position to receive between them a sheet to be painted, means for continuously driving' said roll, the second roll being of such shape that the distance between it and the first roll varies as said rolls are turned, with means in addition to said driving means for starting revolution of the second roll, substantially as described.

2. A painting-machine having two rolls supported substantially parallel to each other and in position to receive between them a sheet to be painted, one of the same being' supplied with paint, means for positively driving one of said rolls, the second of the rolls having ditferent portions of its surface at different distances from its axis of revolution, and means in addition to said driven roll for driving' said second roll, substantially as described.

3. A painting-machine having two rolls, of which one is substantially cylindrical .in form and supplied with paint and the other has a portion only of its surface cylindrical, said second roll being supported at such distance from the first roll that the cylindrical portion of its surface is substantially tangent thereto, with means for continuously driving one of said rolls, and means in addition to the driven roll for positively and intermittently driving the other roll, substantially as described.

4. The combination in a painting-machine, of a substantially cylindrical roll supplied with paint and provided with means whereby it is continuously rotated, a second roll adjacent to the first having a portion of its surface nearer its axis of rotation than the remainder, means for supporting said rolls in position to receive between them a sheet to be painted, with means for causing the IOO IIO

second roll to be rotated at Will, substantially as described.

5. The combination in a painting-machine, of a continuously-rotated paint-roll, a segmental roll adjacent thereto and mechanism for causing the segmental roll to be turned at will through a predetermined arc, substantially as described.

6. The combination in a painting-machine, oi a cylindrical roll and a segmental roll, with means for positively and continuously driving the first of said rolls, means Yfor retaining the segmental roll in position With its -chord portion adjacent to the cylindrical roll, With means `lior causing driving of said segmental roll at Will, substantially as described.

7. A painting machine having a cylindrical and a segmental roll, driving means for said rolls including a device for causing revolution of the segmental roll at will, with a brake for the segmental roll constructed to retard motion thereof at a deiinite point in its revolution and means for retaining it With its chord portion adjacent to the cylindrical roll, substantially as described'.

8. The combination of a cylindrical roll and a segmental roll, circular and segmental disks respectively connected to said rolls, means for driving one of the rolls and means for bringing at will the circular portions of said disks Ainto engagement with one another, substantially as described.

9. The combination of a cylindrical and a segmental roll, means for driving the cylindrical roll, means for causing the segmental roll to be driven from the cylindrical roll, a stop for maintaining the segmental roll With its chord portion adjacent to the cylindrical roll and a brake for said segmental roll, substantially as described.

10. The combination of a cylindrical and a segmental roll, circular and segmental disks respectively connected to said rolls, a Weighted arm connected. to the spindle of the segmental roll, means for driving the cylindrical roll, a device for maintaining the segmental roll in a position with the Weighted arm raised and means for releasing said device, substantially as described.

1].. The combination in a painting-machine, ot a cylindrical and a segmental roll, circular and segmental disks iiXed respectively to said rolls and so proportioned that portions of their surfaces engage each other,

a projection on the segmental disk, a pivoted lever placed to engage said projection and an operating-lever for moving said iirst lever, substantially as described.

l2. The combination of cylindrical and segmental rollers, circular and segmental disks respectively nxed to the shafts of said rollers, a device for normally retaining the segmental disk in a position. with its chord portieri adjacent to the circular disk, a Weighted arm tending to revolve the segmental disk so as to bring its circular portion into engagement With the circular disk and means for operating said device, substantially as described.

13. The combination in a painting-machine, et a pair of rolls ci which one is supplied With paint, a body ol" material covering and projecting irom a portion. of the other roll to a distance sullicient to cause it to engage' the surface of the 'first roll, with a device for causing the second roll to be positively turned at Will, substantially as described.

1.4L. The combination of a traine, cylindrical and segmental rolls, circular and segmental disks respectively connected thereto, a device for normally maintaining the segmental disk with its chord portion adjacent to the cylindrical disk, said device including a projection on the segmental disk, a lever having one end placed to engage said projection and means for moving said lever to release the projection, with means for starting revolution orI the segmental disk and means for continuing said revolution, substantially as described.

15. The combination of a frame, cylindrical and segmental rolls, circular and segmental disks respectively connected thereto, a device for constantly turning the cylindrical disk, means vlior causing the segmental disk to be turned through predetermined arcs, with a projection on said segmental disk, a stop for engaging said projection and a spring placed to act on the projection to retard motion of the disk, substantially as described.

In testimony whereof I have signed my name to this specification in the presence oi" tvvo subscribing Witnesses.

DAVID REYAM.

litnesses WILLIAM E. BRADLEY, Jos. H. KLEIN.

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